1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/fields/bug1683784.js b/js/src/jit-test/tests/fields/bug1683784.js
new file mode 100644
index 0000000000..c496bd0e5b
--- /dev/null
+++ b/js/src/jit-test/tests/fields/bug1683784.js
@@ -0,0 +1,10 @@
+class C {
+  #x() { }
+  constructor() { this.#x = 1; }
+}
+
+try {
+  new C
+} catch (e) {
+  assertEq(e.message, "cannot assign to private method");
+}